function-machine/multiplication/hard · Série 39

8 problems
1
Input: 3 → [?] → 9, what is the rule? =
2
? → [×2] → 4 =
3
Input: 1 → [?] → 3, what is the rule? =
4
? → [×3] → 21 =
5
Input: 8 → [×2] → ? =
6
Input: 4 → [×5] → ? =
7
? → [×3] → 15 =
8
? → [+2] → 11 =
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